When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
If b = 6 and z = 5, what is the value of -9b(b - z)?
| 40 | |
| -120 | |
| -54 | |
| -18 |